Preparation method of nano rubber toughening nylon material

A nano-rubber and nylon technology, which is applied in the field of nano-rubber modified nylon alloy and its preparation, can solve the problems of insufficient mechanical properties of related products, and achieve the effects of easy bending, improved impact performance and low energy consumption

Inactive Publication Date: 2009-10-14
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on its modification in situ in the extruder, and there are not many mechanical properties of related products.

Method used

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  • Preparation method of nano rubber toughening nylon material
  • Preparation method of nano rubber toughening nylon material
  • Preparation method of nano rubber toughening nylon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Nano-nitrile rubber (particle size 100-150 nm) 3 wt %, sodium laurolactam 2 wt %, laurolactam 94.2 wt %, acetylated caprolactam 0.8 wt %, mixed in a high mixer at 1500 rpm for 3 minutes. Put the mixed material into a twin-screw extruder, the reaction temperature is 250°C, the screw speed is 100rpm, and the feeding rate is 3kg / h. The extruded material is pelletized and dried, and then injected at 250°C. The mechanical properties are shown in Table 2. The dispersion and interfacial bonding of nanorubber in nylon are as follows figure 1 shown, figure 2 It is the rheological properties of nylon 12 after adding nano-rubber. Compared with pure nylon 12, the viscosity is basically unchanged, and the processing characteristics of the matrix nylon are maintained.

[0023] The formula of embodiment 2 and 3 is shown in table 1, and its operation is the same as embodiment 1.

Embodiment 4

[0025] Caprolactam 91.5wt%, sodium caprolactam 2.5wt%, silicone rubber 4wt%, TDI 2wt%. The silicone rubber and TDI were first mixed in a high mixer at 1500 rpm for 5 minutes, then caprolactam and sodium caprolactam were added and mixed at 1500 rpm for 5 minutes. The mixed material was fed into the screw, the reaction temperature was 230°C, the screw speed was 100rpm, and the feeding rate was 3kg / h. The extruded material was granulated and dried, and then injected at 230°C.

[0026] The formulations of Examples 5 and 6 are shown in Table 1, and the operation is the same as that of Example 4.

Embodiment 7

[0039] Using the in-situ blending method, 3wt% of acrylate rubber with a particle size of 50nm; 96.93wt% of matrix nylon; 0.05wt% of anionic polymerization initiator sodium hydroxide; The synthesis temperature is controlled to be 150°C, the anionic ring-opening polymerization is carried out, and the nylon alloy is obtained by extrusion and granulation.

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Abstract

The invention relates to a preparation method of nano rubber toughening nylon material. By an in-situ polymerization method, 3 to 10 weight percent of nano rubber, 81.8 to 96.93 weight percent of matrix nylon, 0.05 to 8 weight percent of anionic polymerization initiator and 0.02 to 0.2 weight percent of activating agent are premixed and directly fed into a synthesis device for anionic ring opening polymerization reaction at the synthesis temperature of 150-300 DEG C and extruded into granules to obtain nylon alloy. Compared with the prior art, the invention has the advantages of excellent shock resistance, simple process flow, little consumption, environment protection, no pollution, and the like.

Description

technical field [0001] The invention relates to a nano-rubber modified nylon alloy and a preparation method thereof, in particular to a preparation and modification method of high-viscosity nylon. Background technique [0002] Nylon 6, Nylon 12 are two polyamides that can be polymerized by anionic ring opening. The technology of synthesizing pure nylon 6 or nylon 12 using a twin-screw extruder as a reactor is relatively mature. However, reports of in-situ modification of it in extruders are still rare, and the mechanical properties of related products are not much. In terms of toughening nylon, adding elastomer and nylon melt blending is the most common method. These elastomers include POE, EPDM, SBS, SEBS, EVA, EPR, NBR, etc. Most of them require the addition of functionalized compatibilizers to bond well with nylon. The method of toughening by melt blending generally requires the addition of more elastomer (>10 wt%) to have a significant improvement in performance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L9/02C08L83/04C08L33/14C08L13/00C08G69/18
Inventor 杜立波杨桂生解廷秀
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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